<!DOCTYPE html>
<html lang="en">

<head>
	<meta charset="UTF-8">
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>containsTest</title>
	<script src="../../dist/Free.js"></script>
</head>

<body>
	<script>
		let arr = [1, 2, 3];
		console.log($.contains(arr, 3));
		let str = "12345null";
		console.log($.contains(str, "5"));
		let obj = { a: 1, b: 2 };
		console.log($.contains(obj, "a"));
		let demo = () => { };
		console.log($.contains(str, "null"));
		console.log($.contains('',str));
	</script>
</body>

</html>